Fix broken XML namespaces

XML namespaces aren't real URLs and the "schema" being used is in fact relevant.

See also w3c/svgwg#738 for a similar question.

Refs 5c05ff1

_posts/2009/2009-12-07-implementing-atompub-in-net.markdown

@@ -92,7 +92,7 @@ A client that creates posts must be able to find out where to POST to. This is d
 The service document describes a workspace with collections. We have two: one for posts and another for images. The one for posts includes post categories.
 
 {% highlight xml %}
-<service xmlns="https://www.w3.org/2007/app" xmlns:atom="https://www.w3.org/2005/Atom">
+<service xmlns="http://www.w3.org/2007/app" xmlns:atom="http://www.w3.org/2005/Atom">
   <workspace>
     <atom:title>DBlog.NET</atom:title>
     <collection href="https://localhost/dblog/AtomPost.aspx">

_posts/2010/2010-05-13-spring-ldap-naming-and-directory-services-with-opends.markdown

@@ -87,8 +87,8 @@ To make it all work we need some configuration. We can define a _springldap.xml_
 
 {% highlight xml %}
 <?xml version="1.0" encoding="UTF-8"?>
-<beans xmlns="https://www.springframework.org/schema/beans"
-    xmlns:xsi="https://www.w3.org/2001/XMLSchema-instance"
+<beans xmlns="http://www.springframework.org/schema/beans"
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xsi:schemaLocation="https://www.springframework.org/schema/beans https://www.springframework.org/schema/beans/spring-beans-2.0.xsd">
     <bean id="contextSource"
         class="org.springframework.ldap.core.support.LdapContextSource">

_posts/2010/2010-11-10-ibm-cognos-bi-generic-xslt-normalization-for-table-data.markdown

@@ -11,8 +11,8 @@ I was recently looking at a Cognos BI dataset output in the XML format. It’s a
 
 {% highlight xml %}
 <?xml version="1.0" encoding="utf-8"?>
-<dataset xmlns="https://developer.cognos.com/schemas/xmldata/1/"
-  xmlns:xs="https://www.w3.org/2001/XMLSchema-instance">
+<dataset xmlns="http://developer.cognos.com/schemas/xmldata/1/"
+  xmlns:xs="http://www.w3.org/2001/XMLSchema-instance">
   <metadata>
     <item name="IP Address" type="xs:string" length="102"/>
     <item name="Host" type="xs:string" length="512"/>
@@ -43,8 +43,8 @@ This is a rather annoying format to work with. Let's transform it, generically,
 
 {% highlight xml %}
 <?xml version="1.0" encoding="iso-8859-1"?>
-<xsl:stylesheet version="1.0" xmlns:xsl="https://www.w3.org/1999/XSL/Transform"
-  xmlns:cognos="https://developer.cognos.com/schemas/xmldata/1/">
+<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
+  xmlns:cognos="http://developer.cognos.com/schemas/xmldata/1/">
     <xsl:output method="xml" version="1.0" encoding="UTF-8" standalone="yes" indent="yes"/>
   <xsl:template match="/">
     <xsl:element name="DataSet">

feed.xml

@@ -3,7 +3,7 @@ layout: null
 redirect_from: '/AtomBlog.aspx/'
 ---
 <?xml version="1.0" encoding="utf-8"?>
-<feed xmlns="https://www.w3.org/2005/Atom" xml:lang="en">
+<feed xmlns="http://www.w3.org/2005/Atom" xml:lang="en">
 <title type="text">{{ site.title }}</title>
 <generator uri="https://github.com/mojombo/jekyll">Jekyll</generator>
 <link rel="self" type="application/atom+xml" href="{{ site.url }}/feed.xml" />